*{
    margin: 0;
    padding: 0;
}
.content li {
    list-style: none;
    margin-left: 600px;
    width: 600px;
    text-align: center;
    font-family: 'Courier New', Courier, monospace;
    font-size: 19px;
    font-weight: 400;
    border-bottom: 1px solid rgba(197, 233, 255);
}
.content div:nth-child(1) {
    height: 40px;
    line-height: 40px;
}
.input span {
    display: inline-block;
    width: 100px;
    height: 50px;
    text-align: center;
    line-height: 50px;
}